Defeaturing with Filters

You can selectively remove recognized geometric features (holes or fillets only).
These features must match the parameters specified in filters and a given range of dimensions.
This task shows you how to:

Defeature Fillets Defeature Holes Preview, Edit, or Confirm Defeaturing Filters

Defeature Fillets

1. Click Defeature a volume  in the Volumes toolbar.

   The Defeaturing dialog box appears. You can add or manage the list of activated filters.

2. Click and select Fillet filter.
   The Fillet filter dialog box appears.

3. In the Fillet filter dialog box, under the Basic section, select:

   The Minimum radius check box and define the lower limit of the radius value. This filters out all the recognized fillets with radius equal to or greater than this radius value. The Maximum radius check box and define the upper limit of the radius value. This filters out all the recognized fillets with radius equal to or less than this radius value. Both the Minimum radius and Maximum radius check boxes and define a range of radius value. Ensure that minimum radius less than maximum radius. This filters out all the recognized fillets with radius lying between these values.

4. Click More>>.
   The other capabilities of the command appear under the Advanced section.

5. Under the Advanced section, select:

   The Minimum length check box and define the lower limit of the fillet length. This filters out all recognized fillets with a length equal to or greater than this length.  The Maximum length check box and define the upper limit of the fillet length. This filters out all recognized fillets with a length equal to or less than this length.  Both the Minimum length and Maximum length check boxes and define a range of fillet lengths. Ensure that the minimum length is less than the maximum length. This filters out all recognized fillets with a length lying between these values.  The Minimum angle check box and define the lower limit of the angle between adjacent faces of the fillet. This filters out all recognized fillets with an angle equal to or greater than the fillet angle.  The Maximum angle check box and define the upper limit of the angle between adjacent faces of the fillet. This filters out all recognized fillets with an angle equal to or less than the fillet angle.  Both the Minimum angle and Maximum angle check boxes and define a range of angle between adjacent faces of the fillet. Ensure that the minimum angle is less than the maximum angle. This filters out all recognized fillets with an angle lying between these values.

   The filter for the fillet feature is listed under the Activated filters.

   Notes:

   You can recognize and remove only edge fillets (except conic fillets).  The operation is unavailable for tritangent fillets. For more information, see Generative Shape Design User's Guide: Creating Fillets.  To be filtered out, a feature must satisfy: all the criteria within the same filter (similar to a logical AND)  at least a single criterion across all the filters (similar to a logical OR)

6. Preview, edit, or confirm the filter. See Preview, Edit, or Confirm Filters.

7. Under Volume to Defeature, click the Object box and select the volume to defeature.

Defeature Holes

1. Click Defeature a volume in the Volumes toolbar.

   The Defeaturing dialog box appears. You can add or manage the list of activated filters.

2. Click and select Hole filter.
   The Hole filter dialog box appears.

3. In the Hole filter dialog box, select:

   The Minimum diameter value check box and define the lower limit of the diameter value. This filters out all recognized holes with a diameter equal to or greater than this diameter value. The Maximum diameter value check box and define the upper limit of the diameter value. This filters out all recognized holes with a diameter equal to or less than this diameter value. Both the Minimum diameter value and Maximum diameter value check boxes and define a range of diameter values. Ensure that the minimum diameter value is less than maximum diameter value. This filters out all recognized holes with a diameter lying between these values. The filter for hole feature is listed under Activated filters.

   Note: You can recognize and remove simple, counterbored, counterdrilled, and countersunk holes having flat bottom, V-bottom with blind, up-to-next, up-to-last extension limit. The hole may or may not be threaded.

4. Preview, edit, or confirm the filter.

Preview, Edit, or Confirm Defeaturing Filters

1. Once the filters are defined, click Preview in the Defeaturing dialog box.

   The features to be defeatured are highlighted in the work area.  A warning message appears if there are no features in the defined range of filter  A warning message appears if there are no filters defined.  Once clicked, Preview is no longer available for selection.

   Note: A message appears if a previewed feature cannot be defeatured.

2. To edit a filter, double-click on the filter listed under Activated filters.

3. To remove an added filter, select the filter in the Defeaturing dialog box and click .

4. Once you have added or edited the required filters, click OK.

   Features are kept or removed as specified in the filters.  Defeaturing.x node is added to the specification tree. The specified filters are also summarized under this node.

   Note: You can recognize and remove simple, counterbored, counterdrilled, and countersunk holes having flat bottom, V-bottom with blind, up-to-next, up-to-last extension limit. The hole may or may not be threaded.

5. Double-click the node Defeaturing.x in the specification tree to open the Defeaturing dialog box and edit the required filter.